From 534e1dfcb2f6cdfa1cd62913045b832f2189b7aa Mon Sep 17 00:00:00 2001
From: Leo C
Date: Thu, 14 Aug 2014 16:27:17 +0200
Subject: Add commands: loadf, go, reset restart

---
 avr/main.c | 175 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 avr/main.c

(limited to 'avr/main.c')

diff --git a/avr/main.c b/avr/main.c
new file mode 100644
index 0000000..6dbcdef
--- /dev/null
+++ b/avr/main.c
@@ -0,0 +1,175 @@
+/*
+ */
+
+
+#include "common.h"
+
+#include <util/delay.h>
+//#include <avr/power.h>
+//#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+//#include <util/atomic.h>
+//#include <avr/sleep.h>
+//#include <string.h>
+
+#include <util/delay.h>
+
+#include <stdlib.h>
+#include <stdio.h>
+
+
+#include "config.h"
+#include "debug.h"
+#include "z80-if.h"
+#include "con-utils.h"
+#include "serial.h"
+#include "timer.h"
+#include "cli.h"
+#include "env.h"
+
+/*--------------------------------------------------------------------------*/
+
+void setup_avr(void)
+{
+	/* WD */
+
+	/* CPU */
+
+	/* Disable JTAG Interface regardless of the JTAGEN fuse setting. */
+	MCUCR = _BV(JTD);
+	MCUCR = _BV(JTD);
+
+	/* disable unused periphels */
+	PRR0 = _BV(PRTIM2) | _BV(PRTIM0) | _BV(PRADC);
+	PRR1 = _BV(PRTIM5) | _BV(PRTIM4) | _BV(PRTIM3) | 
+		_BV(PRUSART3) | _BV(PRUSART2) | _BV(PRUSART1);
+
+	/* disable analog comparator */
+	ACSR = _BV(ACD);
+	/* Ports */
+
+	/* Clock */
+	CLKPR = _BV(CLKPCE);
+	CLKPR = 0;
+
+	/* Timer */
+
+	OCR1A = F_CPU / 8 / 1000 - 1; // Timer1: 1000Hz interval (OC1A)
+	TCCR1B = 0b00001010;
+	TIMSK1 = _BV(OCIE1A); // Enable TC1.oca interrupt
+}
+
+
+
+/*******************************************************************************/
+/*******************************************************************************/
+
+#define udelay(n)  _delay_us(n)
+
+
+/* Stored value of bootdelay, used by autoboot_command() */
+static int  stored_bootdelay;
+
+
+/***************************************************************************
+ * Watch for 'delay' seconds for autoboot stop.
+ * returns: 0 - no key, allow autoboot 
+ *          1 - got key, abort
+ */
+
+static int abortboot(int  bootdelay)
+{
+	int abort = 0;
+	uint32_t ts;
+
+	if (bootdelay >= 0)
+		printf_P(PSTR("Hit any key to stop autoboot: %2d "), bootdelay);
+
+#if defined CONFIG_ZERO_BOOTDELAY_CHECK
+	/*
+	 * Check if key already pressed
+	 * Don't check if bootdelay < 0
+	 */
+	if (bootdelay >= 0) {
+		if (tstc()) {	/* we got a key press	*/
+			(void) my_getchar();  /* consume input	*/
+			my_puts_P(PSTR("\b\b\b 0"));
+			abort = 1;	/* don't auto boot	*/
+		}
+	}
+#endif
+
+	while ((bootdelay > 0) && (!abort)) {
+		--bootdelay;
+		/* delay 1000 ms */
+		ts = get_timer(0);
+		do {
+			if (tstc()) {	/* we got a key press	*/
+				abort  = 1;	/* don't auto boot	*/
+				bootdelay = 0;	/* no more delay	*/
+				break;
+			}
+			udelay(10000);
+		} while (!abort && get_timer(ts) < 1000);
+
+		printf_P(PSTR("\b\b\b%2d "), bootdelay);
+	}
+
+	putchar('\n');
+
+	return abort;
+}
+
+const char *bootdelay_process(void)
+{
+	char *s;
+	int bootdelay;
+
+	s = getenv("bootdelay");
+	bootdelay = s ? atoi(s) : CONFIG_BOOTDELAY;
+
+
+	debug("### main_loop entered: bootdelay=%d\n\n", bootdelay);
+	_delay_ms(20);
+
+	s = getenv("bootcmd");
+	stored_bootdelay = bootdelay;
+	return s;
+}
+
+void autoboot_command(const char *s)
+{
+	debug("### main_loop: bootcmd=\"%s\"\n", s ? s : PSTR("<UNDEFINED>"));
+	_delay_ms(20);
+
+	if (stored_bootdelay != -1 && s && !abortboot(stored_bootdelay)) {
+		run_command_list(s, -1);
+	}
+}
+
+
+void main_loop(void)
+{
+	const char *s;
+
+	s = bootdelay_process();
+	autoboot_command(s);
+	cli_loop();
+}
+
+int main(void)
+{
+	setup_avr();
+	z80_setup_bus();
+	
+	serial_setup();
+	sei();
+	
+	if (env_check() == 0)
+		set_default_env();
+	env_init();
+
+	printf_P(PSTR("\n(ATMEGA1281+HD64180)_stamp Tester\n"));
+	
+	main_loop();
+}
-- 
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